Woodworking-machine.



No. 778,676. PATBNTED NOV.ll, 1904. E. RAWSON.

WOODWORKING MACHINE.

APPLIGATION FILED JAN. 1s, 1904.

No monm.. zsHnnTs-snnnm 1,

Wifgesses PATENTED NOV. l, 1904. l

E. RWSDN.

' WOODWORKING MACHINE.

LPPLIATION FILED JAN.16. 1904.

2 SHEETS-SHEET Z.

N0 MODEL.

lUNirnn STATES.

Patented November 1, 1904,

EDWVARD R'AVSON, OF MOSOOV, lDAHO.

WOODWORKlNG-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 773,676, dated November1, 1904.

Application filed January 16, 1904. Serial No. 189,357. (No model.)

To (ril 7071/0711, ir 71mg/ concern:

Be it known that I, EDWARD RAwsoN, a citi- Zen of the United States,residing at Moscow, in the county of Latah and State of Idaho, haveinvented a new and useful Vood working- Machine, of which the followingis a specifif cation.

This invention relates to woodworking-machines, reference being had moreparticularly to woodworlting-machines comprising a rotating cutter-headand a support therefor by means of which the cutter-head may be held inany desired position and operated in any position in which it may beheld, thereby adapting the machine for a great variety of operations.

The object of the invention is to provide in a machine of the characterspecified an improved form of supporting and driving mechanism for thecutter-head to facilitate the operation of the cutter-head under any andall conditions and to provide an improved form of cutter-head in whichthe bits may be easily secured and which may be easily removed from orinserted into the machine when desired.

Vith the object above mentioned in view the invention consists in thenovel construc-Y tion and combination of parts of a universalwoodworking-machine, hereinafter fully described, illustrated in theaccompanying drawings, in which there is shown the preferred form ofembodiment of the invention, and having the novel features particularlypointed out in the appended claims, it being understood that variouschanges in the form, proportions, and exact mode of assemblage of theelements exhibited may be made without departing from the spirit of theinvention or sacrificing the advantages thereof.

ln the drawings, Figure 1 is a view in side elevation of the completemachine. Fig. 2 is a front elevation of the complete machine. Fig. 3 isadetail view, in longitudinal section, through theJcutter-head. Fig. ais a 4detail view, in side elevation, of the cutter-head and spindleremoved from the supporting-sleeve. Fig. is a reverse plan View of theframe in which the cutter-head is supported and the pulleys by which themovement of the driving-belt is controlled.

Referring to the drawings,in which corresponding parts are designated bysimilar characters Iof reference, 1 1 designate hangers adapted to besecured by bolts, screws, or other suitable fastenings means to anoverhead structure, such as a ceiling, and having depending portions oftriangular form, in the bottom of which are provided openings 2 toreceive a shaft 3, upon which a frame f1 is pivotally mounted, as shown.is of elongated form and is provided at one end with a weight 5, whichserves as a counterpoise for the structure supported at the other end ofthe frame. At the end of the frame opposite that at which the weight 5is mounted there is pivotally supported a member 6, comprising an eye 7,fitted over a stud 8, projecting from the end of the frame and threadedat its extremity to receive anut 9, by which the member 6 is held inposition, and a cross-bar 10,A whose ends serve as journals for a pairof grooved pulleys 11. The cross-bar 1() affords a support for aT-shaped member 12, pivotally mounted between the pulleys 11 and havingthe stem thereof made hollow to form a sleeve 13, within which issecured a rod 14, provided at its lower end with a transverse sleeve 15,which supports a shaft 16. The rod 111 is adjustably secured in thesleeve 13 in any suitable manner, as by a cap 17, having an inwardlydisposed flange 18, which engages a fiange 19, formed on the rod 14, andholds it in proper position relative to the lower end of the sleeve 13.The sleeve 18 also affords support for a bracket 20, which is adjustablysecured in position on the sleeve vby means of a set-screw 21 and whichaffords support for a set of guidepulleys 22, which are normally held inthe positions shown in Figs. 1 and 2.

The shaft 16, supported inthe sleeve 15 at i the bottom of the rod 14,forms a cross-head, which carries the horizontally-arranged plates orbars Q3, the ends of which areprovided with eyes in which are supporteda pair of shafts 25, on which are mounted two lpairs of groovedguide-pulleys 26. Suspended from The frame 1v the shafts 25 beneath theguide-pulleys 26 are two frames, each comprising a sleeve 27 andbifurcated arms 23, diverging from the sleeve, as best seen in Fig. 2,the bifurcated arms being provided with eyes in their upper ends throughwhich the shafts 25 pass. The two frames are rigidly connected with thehorizontally-arranged plates or bars 23, so that the two frames form, ineffect.y a unitary structure. and the sleeves 2T are alined to formbearings for a sleeve 29, which is rotatably mounted therein andprovided midway between its ends with a grooved pu llcy 30, formedintegral therewith, as shown in Fig. 4, or rigidly secured to the sleevein any preferred manner. The sleeve 29 is designed to receive thespindle 31 of the cutter-head, which is provided near one end with aflange 32 for contact with one end of the sleeve 29 and at the other endis threaded to receive a nut 33 and washer 34, by means of which theflange l 32 is drawn into engagement with the end of the sleeve 29. Theportion of the spindle 31 which projects beyond the flange is of largerdiameter than the portion inserted into the sleeve 29 and is threaded atits extremity to receive a nut by means of which a loose collar 36 isforced into engagement with cutting-bits of any desired form, as 3T,which are arranged between the flange 32 and the collar 36.

In the frame 4 at its pivotal point there is supported a double pulley33, to which power is imparted by a belt 39, running over a pulley 40upon a driving-shaft 41, arranged above the pulley o8. The pulley 38also carries a belt 42, which is preferably of circular crosssection andpasses over grooved pulleys 11 on the cross-bar 10 and thence downwardbctwcen the guide-pulleys 22, carried by the bracket 20. The belt 42also passes between the two pairs of guide-pulleys 26 and encircles thepulley 30, mounted on the sleeve 29, as shown in Figs. 1 and 2. belt 42tight and to prevent disengagement with the pulley 3S, a guide-roller 43is secured in a bracket 44 beneath the frame 4 adjacent to the pulley38, and a tightener comprising' a pivoted arm 45, mounted on the shaft 3and bearing a grooved roll 46, which rests upon the belt 42 between theguide-roll 43 and one of the pulleys 11, is arranged as shown in Fig. 1.

lith a machine constructed in the manner described the weight of thecutter-head and the operating mechanism therefor will always becountm'balanced by the weight 5 at the end of the frame 4, so that thecutter-head and the swinging frames in which it is supported may beraised or lowered without the expenditure of any considerable effort.Moreover, owing to the fact that the member (i, upon which thecutter-head and the driving mechanism therefor are suspended, is pivotlnorder to keep the f ally connected with the frame 4, the cutterhead maybe swung to the right or left, as indicated by arrows in Fig. 2, andowing to the pivotal connection of the member 12 with the member 6 thecutter-head and its driving mechanism may be swung to the right or left,as indicated by arrows in Fig. 1. The pivotal support of the frames inthe sleeve 27, on which the cutter-head turns, permits the lower portionof the cutter-head-supporting mechanism to be tilted at an angle to therod 14, and the mode of securing the rod 14 in the sleeve 13 permits therotative movement of the frames carrying the cutter-head in addition tothe various pivotal movements already explained. It will therefore beevident that the cutter-head may be presented to the material upon whichit is to operate at any angle which may be desired, and the change ofthe angle at which the cutter-head is held may be instantly effectedwithout stopping the operation of the machine or in any way disarrangingthe driving mechanism.

By arranging the main driving-pulley 38 at the pivotal point of theframe 4 any variation in the tension of the belt from rocking the frame4 upon its support is obviated, and the tightcner for the belt arrangedbeneath the frame 4 will prevent any variation in the tension of thebelt from the rotative movement of the rod 14 in the sleeve 13 or theshifting of the position of the cutter-headsupporting frames withreference to the rest of the machine structure.

The arrangement of the cutter-head spindle and the sleeve in which it iscarried, as well as the simple means for securing' the cuttingbits inthe cutter-head, is designed to facilitate the quick removal of thecutter-head from the machine and ready interchange of the cutting-bits.

By' the peculiar arrangement of the guidepulleys shown and described asingle belt will serve to transmit motion from the pulley 38 to thespindle of the cutter-head and the possibility of the accidental removalof the belt from the pulley on the sleeve 29 is absolutely prevented.

Having thus described the construction and operation of my invention,what I claim as new, and desire to secure by Letters Patent, is-

l. In a woodworking-machine, the combination with a mainsupporting-fratrie having a drive-pulley, of a hanger hinged to the mainframe, guide-pulleys mounted at the axis of the hinged connection of thehanger, a cross-head suspended from the hanger, bars pivotally supportedat opposite ends of the cross-head, pairs of guide-pulleys carried bythe ends of the bars, a cutter-head frame suspended from the ends ofthe'bars, a cutterhead having a pulley disposed beneath and inalineinent with the interval between the adjacent guide-pulleys, and anendless driving- IOO belt engaging the drive-pulley, the cutterheadpulley and the intermediate guide-pulleys.

2. In a woodworking-maehine, the combination with a supporting-frame, ofa drivepulley thereon, a Cutter head -supporting structure disposed atsubstantially right angles to the supporting-frame and hinged th ereon,a pair or'vguide-pulleys mounted at the axis of the hinged connectionbetween the eutter-head-supporting structure and the mainsupporting-frame, a cutter-head having' a pulley disposed atsubstantially right angles to the drive-pulley, pairs oi' guide-pulleysearried by the eutter-head-supporting structure at opposite sides of theperiphery of the pulley of the cutter-head and at substantially rightangles thereto, and an endless drive-belt engaging the drive-pulley, thecutter-head pulley and the intermediate guide-pulleys.

3. In a woodworking-machine, the Combination with a mainsupporting-frame having a drive-pulley, a hanger pivotally supportedupon the frame to swing transversely thereof, a cutter-head carried bythe hanger and having a pulley, a pair of guide-pulleys carried by theupper portion of the hanger, an endless drive-belt engaging thedrive-pulley, the pulley of the cutter-head and the guide-pulley on thehanger, and a set of three pulleys earried by the hanger in transversealinement below the first-mentioned guide-pulleys with the driving-beltrunning between the intermediate pulley and the terminal pulleys of theset of pulleys.

4L. ln a woodworking-machine, the combination with anintermediately-pivoted supporting-frame having a eounterweight upon oneend thereof, oi' a drive-pulley carried by the frame at .its pivotalsupport, a hanger having a universal connection with the opposite endor' the frame and including a sleeve which is open at its lower end,guide-pulleys carried by opposite sides of the hanger at its upper end,a set of three guide-pulleys earried by the hanger and alinedtransversely below the rst-nnentioned guide-pulleys, a bar pendent fromand swiveled within the sleeve and having a cross-head at its lower end,bars pivoted intermediately to the opposite ends of the cross-head,pairs of guide-pulleys earried by opposite ends otl the bars, aCutterhead frame hung from the ends of the bars, a cutter-head carriedby the frame and having a pulley disposed below and in alinement withthe interval between the guide-pulleys carried by the bars, and anendless drivingbelt engaging the drive-pulley, the guide pulleys and thepulley oi' the Cutter-head.

5. The combination in a woodworking-machine, of a supporting-frame, asleeve rotatably mounted in said frame and having a driving-pulleyrigidly secured thereon, and a cutter-head carried by said sleeve, saidcutterhead Comprising a spindle extending through the sleeve and having'a iiange to Contact with one end of the sleeve, a nut at the end of thespindle to draw the flange into engagement with the end of the sleeve, aloose collar on the other end of the spindle, and a nut to force saidcollar toward said flange.

In testimony that I claim the foregoing as my own l have hereto ailiXedmy signature in the presence of two witnesses. l

EDWARD RAWSON.

/Vitnesses:

WM. HUNTER, M. M. RAwsoN.

